Corrected the help text for numerical.html

and also included Numerical in questiontypes.html

diff --git a/lang/en/help/quiz/numerical.html b/lang/en/help/quiz/numerical.html
index 92d261996df60737e939bade69606fc1c5af600d..3603c6966b34175f57e11e865f454cce9de844de 100644 (file)
--- a/lang/en/help/quiz/numerical.html
+++ b/lang/en/help/quiz/numerical.html
@@ -1,10 +1,16 @@
 <P ALIGN=CENTER><B>Numerical questions</B></P>
 
-<p>In response to a question (that may include a image) the respondent 
-   must type a number.</p>
+<p>From the student perspective, a numerical question looks just
+    like a short-answer question.</P>
 
-<p>The required answer may have an accepted error.  This allows a range of 
-   answers to be set.</p>
+<p>The difference is that numerical answers are allowed
+    to have an accepted error. This allows a continuous range of answers
+    to be set.</P>
+
+<p>For example, if the answer is 30 with an accepted error of 5,
+    then any number between 25 and 35 will be accepted as correct.</p>
+
+<p>Numerical questions can also have case-insensitive non-numerical answers.
+    This is useful whenever the answer for a numerical question 
+    is something like N/A, +inf, -inf, NaN etc</p>
    
-<p>For example, if the answer is 30 with an error of 5, then any number 
-   between 25 and 35 will be accepted as correct.</p>

diff --git a/lang/en/help/quiz/questiontypes.html b/lang/en/help/quiz/questiontypes.html
index 799fe4e3cb5309561f066b9ef330d5209c34a52c..b93b82cf93deb687127eca9928bdb9e121be95fa 100644 (file)
--- a/lang/en/help/quiz/questiontypes.html
+++ b/lang/en/help/quiz/questiontypes.html
@@ -19,6 +19,17 @@
 <p align=right><a href="help.php?file=shortanswer.html&module=quiz">More info about Short Answer questions</a></p>
 </UL>
 
+<P><B>Numerical</B></P>
+<UL>
+<P>From the student perspective, a numerical question looks just
+    like a short-answer question.
+    The difference is that numerical answers are allowed
+    to have an accepted error. This allows a continuous range of answers
+    to be set.
+</P>
+<p align=right><a href="help.php?file=numerical.html&module=quiz">More info about Numerical questions</a></p>
+</UL>
+
 <P><B>True/False</B></P>
 <UL>
 <P>In response to a question (that may include a image), the respondent